CN102536802A - Power steering pump - Google Patents
Power steering pump Download PDFInfo
- Publication number
- CN102536802A CN102536802A CN2011104519428A CN201110451942A CN102536802A CN 102536802 A CN102536802 A CN 102536802A CN 2011104519428 A CN2011104519428 A CN 2011104519428A CN 201110451942 A CN201110451942 A CN 201110451942A CN 102536802 A CN102536802 A CN 102536802A
- Authority
- CN
- China
- Prior art keywords
- oil
- pump
- pump housing
- chamber
- distribution casing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
- F01C21/104—Stators; Members defining the outer boundaries of the working chamber
- F01C21/108—Stators; Members defining the outer boundaries of the working chamber with an axial surface, e.g. side plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/24—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
- F04C14/26—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/24—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
- F04C14/26—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels
- F04C14/265—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels being obtained by displacing a lateral sealing face
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
- F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/30—Casings or housings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a power steering pump. The power steering pump is characterized in that a pump shaft is connected in series with a front oil distribution disc, a blade assembly and a front oil distribution disc into a whole so as to be installed in a pump body cavity, the front oil distribution disc and a front wall of the pump body cavity form an oil-out front cavity in an enclosed mode, and a pump body is provided with a valve hole on the side of an outer circle of the pump body cavity; the valve hole is communicated with the oil-out front cavity, the valve hole is internally provided with a flow safety control valve, and the oil-out front cavity is communicated with an oil outlet at the front of the pump body through a high-pressure oil channel; the outer circle of the blade assembly and an inner wall of the pump body cavity form a pump body back cavity in an enclosed mode, and the valve hole is communicated with the pump body back cavity through a return oil channel; and blades are driven by the pump shaft to rotate so as to finish an oil absorption and draining process, and the flow safety control valve controls oil mass discharged from the oil-out front cavity through the oil outlet to keep constant. The power steering pump provided by the invention has the advantage of shortening a high-pressure oil flow channel with smoothness in transition, reducing flow pressure loss, and avoiding that the power steering pump is failed due to serious heating because the flow channel in the traditional structure is long and bent by adopting a high pressure structure of the pump body front cavity.
Description
Technical field
The present invention relates to a kind of automobile hydraulic power steering boost pump, relate in particular to the automobile hydraulic power steering boost pump that can reduce the automobile steering system temperature.
Background technique
In recent years, along with developing rapidly of Chinese national economy and automotive industry, the load-carrying of bridge constructions before large-tonnage is two, mining and engineering is more and more with automobile demand; Because the load-carrying of automobile increases; Drive vehicle front and turn to the corresponding increase of required moment, this just needs to strengthen the cylinder diameter of steering box, and the steering pump flow of demand will increase; Simultaneously two propons automobiles have increased servo-cylinder again, also need increase certain flow.Flow is big, and corresponding, the temperature of steering system is just than higher.Applying working condition in view of present domestic engineering truck; As serious, the reason such as road conditions abominable, client's usage mode is improper that overloads, more being easy to generate high temperature, steering pump inner components machining accuracy is very high; At high temperature expand; Increase friction, and steering system is at high temperature thinning with oil, rotten, also can influence life-span of steering system.
At present; Traditional steering pump is to adopt the structure of ante-chamber (near actuation gear one end) low pressure referring to accompanying drawing 1, and it mainly is made up of the pump housing 3, bonnet 19, back oil distribution casing 10, stator 12, rotor 13, blade 14 assemblies, preceding oil distribution casing 15, locating stud 11, pump shaft 17, bearing 2, flow Safety control valve, valve seat 8, taper valve core 6 and some Sealings, the spring that are installed in the pump housing 3 valve openings.Its high-pressure oil passage B is in bonnet 19 positions, and accompanying drawing 2 is the detail drawing (close hatching display unit is a high-pressure oil passage) of this structure steering pump pump housing internal high pressure oil passage 21, and this structure high-pressure oil passage 21 is longer, and exists crookedly, just has following defective:
(1) close hatching display unit in the accompanying drawing 2, three Kong Junxu processing of its high pressure oil runner, manufacturing procedure increases cost more, and the transition of passage non-flat, and the operation that influences high pressure oil is unobstructed;
(2) the long loss that just has the flow pressure aspect of runner can not be beaten motionless direction or hard steering by normal state work on the one hand, if flow pressure does not reach desirable value on the other hand, the stability of steering system and life-span can reduce;
(3) runner is long and complicated; Can cause the fluid temperature rise too fast, the temperature of whole system higher (engineering truck, mining car oil temperature can reach 100 ℃～160 ℃) makes the aging quickening of Sealing like this; Cause leakage of oil easily; The too high kinematical viscosity of fluid that also possibly cause of oil temperature sharply reduces, and steering system inner body wearing and tearing aggravation causes reduce greatly the working life of whole steering system.
(4) steering system fluid can not be stopped sneaking into of impurity fully, and valve seat divides two kinds in the valve body assembly of conventional construction steering pump: no filter screen with filter screen arranged.No filter screen, as shown in Figure 3, impurity 22 gets lodged in cone valve sealing part 23, causes poorly sealedly, causes pressure to be set up not, beats motionless direction or hard steering; Filter screen is arranged, as shown in Figure 3, individual layer filter screen 23, and be prone to deeply to cause if blocked fully, under high pressure, can make the steering pump pump housing explode shell on the filter screen that impurity piles up because of structure.
(5) as shown in Figure 4, the processing of the inner spill port of the pump housing, traditional approach is generally from piercing perpendicular to the valve opening direction, and what on valve opening, get out is shaped as circle.When the low speed overflow, its opening is less, causes flooding velocity high, is prone to cause heating, and oily temperature temperature rise is very fast, and under the high temperature, the steering pump inner body is easy to wear, reduces the working life of steering pump.
Summary of the invention
The object of the invention is exactly in order to solve the problems of the prior art, and a kind of power assistance pump for steering is provided, and can reduce temperature rise from the heating source, and then reduces the oil temperature of the whole steering system of automobile, the working life of improving steering system.
For solving the problems of the technologies described above, the present invention adopts following technological scheme: power assistance pump for steering comprises the pump housing; The pump housing is provided with inner chamber, said pump housing inner chamber inside by after be provided with blade assembly, preceding oil distribution casing, the holddown spring that back oil distribution casing, stator and rotor and blade are formed forward successively, a pump shaft is installed in the pump housing inner chamber after afterwards oil distribution casing, blade assembly and preceding oil distribution casing are connected into one; The pump shaft front end stretches out pump housing front end and installing drive gear; The pump shaft rear end is supported on the oil distribution casing of back, it is characterized in that: oil distribution casing and pump housing inner chamber antetheca surround fuel-displaced ante-chamber before said, and the said pump housing is provided with a valve opening in pump housing inner chamber outer circumferential sides; Valve opening is communicated with fuel-displaced ante-chamber; One flow Safety control valve is installed in the valve opening, and said fuel-displaced ante-chamber is communicated with the anterior oil outlet of the pump housing through high-pressure oil passage, surrounds pump housing back cavity between cavity wall in the said blade assembly excircle and the pump housing; Said valve opening is communicated with pump housing back cavity through drainback passage; Said blade is accomplished oil suction oil extraction process by the pump shaft rotary driving, and the flow Safety control valve is controlled the recirculating oil quantity size of fuel-displaced ante-chamber to drainback passage, and the oil mass that fuel-displaced ante-chamber is discharged through oil outlet keeps steady state value.
As preferably; Said fuel-displaced ante-chamber is positioned under the oil outlet; Said high-pressure oil passage comprises the horizontal oil duct that is positioned under the oil outlet and vertical oil duct; Laterally oil duct and opening end parallel with pump shaft is communicated with fuel-displaced ante-chamber, and vertically oil duct and horizontal oil duct are vertical perhaps is 60 and spends to 90 acute angle and the opening ends of spending and be communicated with oil outlet.
As preferably, said pump housing intracavity posterior end opening and by back oil distribution casing sealing.
As preferably, said pump housing front end is a flange arrangement, is provided with rolling bearing and oil sealing between flange end and the pump shaft, and said oil sealing adopts rotation lips two-man act outside framework oil seal.
As preferably, also be provided with sliding bearing between said pump shaft and the back oil distribution casing.
As preferably, said back oil distribution casing, blade assembly, preceding oil distribution casing adopt locating stud to be concatenated into one.
As preferably, the valve seat in the said flow Safety control valve is taked the double-layer leaching net structure, said double-layer leaching net ectomesoderm filter screen 60 orders; Mesh diameter Φ 0.18, inner filter screen 120 orders, mesh diameter Φ 0.06;, and double-layer leaching net is the arc structure of protuberance laterally.
As preferably, said flow Safety control valve inside is provided with cone valve, and said cone valve comprises taper valve core and pressure limiting spring, and valve seat inside is provided with the awl mouth suitable with taper valve core, and said pressure limiting spring compression taper valve core makes taper valve core withstand awl mouthful.
As preferably, said drainback passage pierces to favour the valve opening direction, and the drainback passage mouth shows in valve opening is shaped as ellipse.
As preferably, be equipped with O-ring seals between said preceding oil distribution casing, back oil distribution casing excircle and the pump housing internal chamber wall, the flanged surface of pump housing front end is provided with O-ring seals.
Beneficial effect of the present invention: the present invention adopts pump housing ante-chamber high voltage structures; Shorten the high pressure oil runner; And the runner transitions smooth reduces the flow pressure loss, has avoided and heating that bending the cause serious consequence that cause steering pump lost efficacy long because of runner in the conventional construction.Because pump housing inner flow passage is designed to the ante-chamber high voltage structures, manufacturing procedure is few, is easy to processing, reduces cost.And the integrated design of bonnet and back oil distribution casing has not only reduced cost from material and processing aspect, also because of its designs simplification, improves the assembling stability and the working life of assembly.Its valve seat adopts double-layer leaching net, and filtering effect is better, prevents the fried shell that produces because of blocking.Spill port pierces with the direction that favours valve opening, and that in valve opening, shows is shaped as ellipse, and the hole is longer, and efficient is higher when the low speed overflow, the less heating and the pressure loss.Said pump reduces heating value, the working life that can not only improve pump self, the working life that also can improve automobile steering system from the heating source.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further described:
Fig. 1 is the sectional view of conventional construction power steering pump assembly assembling;
Fig. 2 is the sectional view of conventional construction power assistance pump for steering pump housing internal high pressure oil passage;
Fig. 3 is the structural drawing of conventional construction power assistance pump for steering valve body assembly;
Fig. 4 is conventional construction power assistance pump for steering valve body assembly position view in valve opening;
Fig. 5 is the sectional view of ante-chamber high pressure cooling power assistance pump for steering assembly of the present invention assembling;
Fig. 6 is the sectional view of ante-chamber high pressure cooling power assistance pump for steering pump housing internal high pressure oil passage of the present invention;
Fig. 7 is the structural drawing of valve seat in the ante-chamber high pressure cooling power assistance pump for steering valve body assembly of the present invention;
Fig. 8 is ante-chamber high pressure cooling power assistance pump for steering valve body assembly of the present invention position view in valve opening.
Embodiment
As shown in Figure 5; Ante-chamber high pressure cooling power assistance pump for steering comprises the pump housing 3, and the pump housing 3 is provided with inner chamber; Said pump housing inner chamber inside by after be provided with back oil distribution casing 10, stator 12, rotor 13, blade 14, locating stud 11, preceding oil distribution casing 15, holddown spring 16 forward successively; One pump shaft 17 will back oil distribution casings 10, stator 12, rotor 13, blade 14 and preceding oil distribution casing 15 are installed in the pump housing 3 inner chambers after being connected into one, and pump shaft 17 front ends stretch out the pump housing 3 front ends and installing drive gear 1, and pump shaft 17 rear ends are supported on the oil distribution casing of back 10; Oil distribution casing 15 surrounds fuel-displaced ante-chamber with the pump housing 3 inner chamber antethecas before said; The said pump housing 3 is provided with a valve opening in pump housing inner chamber outer circumferential sides, and valve opening is communicated with fuel-displaced ante-chamber A, and a flow Safety control valve is installed in the valve opening; Said fuel-displaced ante-chamber A is communicated with the pump housing 3 anterior oil outlets through high-pressure oil passage 21; Surround pump housing back cavity between cavity walls in said stator 12, rotor 13, blade 14 assembly excircles and the pump housing 3, said valve opening is communicated with the pump housing 3 back cavities through drainback passage B, and the blade 14 in said stator 12, rotor 13, blade 14 assemblies is by pump shaft 17 rotary driving completion oil suction oil extraction process; The flow Safety control valve is controlled the recirculating oil quantity size of fuel-displaced ante-chamber A to drainback passage B, and the oil mass that fuel-displaced ante-chamber A is discharged through oil outlet keeps steady state value.Said fuel-displaced ante-chamber A is positioned under the oil outlet; Said high-pressure oil passage comprises the horizontal oil duct that is positioned under the oil outlet and vertical oil duct; Laterally the parallel and opening end of oil duct and pump shaft 17 is communicated with fuel-displaced ante-chamber A, and vertically oil duct and horizontal oil duct are vertical perhaps is 60 and spends to 90 acute angle and the opening ends of spending and be communicated with oil outlet.The said pump housing 3 intracavity posterior end openings and by back oil distribution casing 10 sealing.The said pump housing 3 front ends are flange arrangement, are provided with rolling bearing 2 and oil sealing 18 between flange end and the pump shaft 17, and said oil sealing 18 adopts rotation lips two-man act outside framework oil seal.Also be provided with sliding bearing 9 between said pump shaft 17 and the back oil distribution casing 10.Said back oil distribution casing 10, stator 12, rotor 13, blade 14 assemblies, preceding oil distribution casing 15 adopt locating stud 11 to be concatenated into one.Valve seat 8 in the said flow Safety control valve is taked the double-layer leaching net structure.Said double-layer leaching net ectomesoderm filter screen 60 orders, mesh diameter Φ 0.18, inner filter screen 120 orders, mesh diameter Φ 0.06,, and double-layer leaching net is the arc structure of protuberance laterally.Said flow Safety control valve inside is provided with cone valve, and said cone valve comprises taper valve core 6 and pressure limiting spring 5, and valve seat 8 inside are provided with the awl mouth suitable with taper valve core 6, and said pressure limiting spring 5 compresses taper valve core 6 makes taper valve core 6 withstand awl mouthful.Said drainback passage B pierces to favour the valve opening direction, and drainback passage B mouth shows in valve opening is shaped as ellipse.Be equipped with O-ring seals between oil distribution casing 15, back oil distribution casing 10 excircles and the pump housing 3 internal chamber walls before said, the flanged surface of the pump housing 3 front ends is provided with O-ring seals.Preceding oil distribution casing is compressed in holddown spring 16 on the pump housing inner chamber antetheca.Flow valve 4 rear portions are provided with restraining spring 7.
Ante-chamber high pressure cooling power assistance pump for steering working principle: stator 12, rotor 13, blade 14, preceding oil distribution casing 15 and back oil distribution casing 10 are formed two enclosed volumes, and when steering pump was worked under the drive of motor, blade 14 was close on the internal surface of stator 12 under action of centrifugal force; Swept volume is changed from small to big, more from large to small, and compression fluid; Accomplish and once inhale, press oily process, the oil mass of pump output increases with the rotating speed of rotor 13, and pump shaft 17 whenever rotates a circle; Each enclosed volume is accomplished oil suction oil extraction process twice; The oil of discharging makes the flow of pump output keep constant value through Flow valve 4 and orifices controls, gets rid of through oil outlet.When rotating speed increased, flow increased, the pressure reduction through throttle orifice also increases, and promotes Flow valve 4 toward right motions; A chamber (fuel-displaced ante-chamber) is connected with B chamber (drainback passage), forms overflow, makes unnecessary flow get back to filler opening; Flow is big more, and opening is big more, makes the flow of pump output keep constant value.Otherwise when rotating speed reduced, flow reduced, the pressure reduction through throttle orifice also reduces, and promoted Flow valve 4 toward left movements, and spillway discharge reduces, and makes output flow keep constant value.The oil of overflow is directly got back to the filler opening of oil pump, participates in circulation next time again.When rotating speed is lower than the unlatching rotating speed of Flow valve 4, flow will be lower than constant value, and spillway discharge is zero.When system works pressure surpassed oil pump relief valve pressure, taper valve core 6 was toward left movements, made hyperbaric chamber and B chamber joint, whole hydraulic oil flow resorption oil pockets, thus system is played the safety protection effect.
As shown in Figure 6, the said pump housing 3 is the ante-chamber high voltage structures, and high-pressure oil passage 21 is near oil outlet 20; Simple, open, the few turning of its runner is crooked, makes the circulation of high pressure oil unobstructed, has reduced the pressure flow loss; Steering pump can be worked under normal parameter, improve the stability of a system.And the more conventional pump housing in hole that the pump housing 3 mesohigh runner holes need process will lack, and processing method is simple and easy, and the process-cycle shortens, and it is more less slightly that the kind of related frock, cutter and measurer and quantity are all wanted, and can reduce production costs, and is suitable for producing in batches.
As shown in Figure 7, valve seat 8 adopts the double-layer leaching net structure in the said valve body assembly, and outer 29 is slightly rare: 60 orders, diameter of phi 0.18; Internal layer 28 is closeer: 120 orders, and diameter of phi 0.06, the filtering effect of double-layer leaching net is better; And its structure is an arc structure, and under the impact of high pressure oil, impurity 22 can not rest on position, arc top and result in blockage; Avoid impurity 22 to get into valve inner and be stuck on the cone valve, beat motionless direction or hard steering, reduce the working life of steering pump.
As shown in Figure 8, the processing of the inner spill port of the said pump housing pierces (the diagram direction of arrow) to favour valve opening 27 directions, is shaped as oval 26 what 27 li of valve openings showed; The length in its hole is long, and in automobile during low cruise, high pressure oil promotes the valve body a bit of distance of moving; Under square one; It exposes, and area 25 is bigger than circular port, and spillover efficiency is higher, is difficult for the loss of excessive and build-up of pressure.
According to market survey, the situation that causes boost pump to lose efficacy because of the fluid problem accounts for 70%～80% of boost pump total failare, and system temperature too high be the main cause that turns to deterioration of oil.The ante-chamber high pressure cooling steering pump that the present invention relates to; From the research of setting about in heating source, change conventional structure, experiment confirm; Under similarity condition; The oil liquid temperature of its steering system is than low 20～30 ℃ of conventional steering pump, and the reduction of system oil temperature is to can both improve the working life of boost pump and even whole steering system greatly.
Ante-chamber high pressure cooling power assistance pump for steering performance parameter
1. stator discharge capacity: 20ml/r
2. pressure range: maximum 14.7MPa
3. speed range: 400～4000r/min
To explanation of the present invention, not during above embodiment, any scheme after the simple transformation of the present invention is all belonged to protection scope of the present invention qualification of the present invention.
Claims (10)
1. power assistance pump for steering; Comprise the pump housing (3); The pump housing is provided with inner chamber, said pump housing inner chamber inside by after be provided with blade assembly, preceding oil distribution casing (15), the holddown spring (16) that back oil distribution casing (10), stator (12) and rotor (13) and blade (14) are formed forward successively, a pump shaft (17) is installed in the pump housing (3) inner chamber after afterwards oil distribution casing (10), blade assembly and preceding oil distribution casing (15) are connected into one; Pump shaft (17) front end stretches out the pump housing (3) front end and installing drive gear (1); Pump shaft (17) rear end is supported on the oil distribution casing of back (10), it is characterized in that: oil distribution casing (15) surrounds fuel-displaced ante-chamber (A) with the pump housing (3) inner chamber antetheca before said, and the said pump housing (3) is provided with a valve opening in pump housing inner chamber outer circumferential sides; Valve opening is communicated with fuel-displaced ante-chamber (A); One flow Safety control valve is installed in the valve opening, and said fuel-displaced ante-chamber (A) is communicated with the anterior oil outlet (20) of the pump housing (3) through high-pressure oil passage (21), surrounds pump housing back cavity between said blade assembly excircle and the interior cavity wall of the pump housing (3); Said valve opening is communicated with the pump housing (3) back cavity through drainback passage (B); Said blade (14) is accomplished oil suction oil extraction process by pump shaft (17) rotary driving, and the flow Safety control valve is controlled the recirculating oil quantity size of fuel-displaced ante-chamber (A) to drainback passage (B), and the oil mass that fuel-displaced ante-chamber (A) is discharged through oil outlet keeps steady state value.
2. power assistance pump for steering according to claim 1; It is characterized in that: said fuel-displaced ante-chamber (A) is positioned under the oil outlet; Said high-pressure oil passage comprises the horizontal oil duct that is positioned under the oil outlet and vertical oil duct; Laterally oil duct and opening end parallel with pump shaft (17) is communicated with fuel-displaced ante-chamber (A), and vertically oil duct and horizontal oil duct are vertical perhaps is 60 and spends to 90 acute angle and the opening ends of spending and be communicated with oil outlet.
3. power assistance pump for steering according to claim 1 is characterized in that: the said pump housing (3) intracavity posterior end opening and by the back oil distribution casing (10) sealing.
4. power assistance pump for steering according to claim 1 is characterized in that: the said pump housing (3) front end is a flange arrangement, is provided with rolling bearing (2) and oil sealing (18) between flange end and the pump shaft (17), and said oil sealing (18) adopts rotation lips two-man act outside framework oil seal.
5. power assistance pump for steering according to claim 1 is characterized in that: also be provided with sliding bearing (9) between said pump shaft (17) and the back oil distribution casing (10).
6. power assistance pump for steering according to claim 1 is characterized in that: said back oil distribution casing (10), blade assembly, preceding oil distribution casing (15) adopt locating stud (11) to be concatenated into one.
7. according to each described power assistance pump for steering of claim 1 to 6; It is characterized in that: said flow Safety control valve inside is provided with cone valve; Said cone valve comprises taper valve core (6) and pressure limiting spring (5); Valve seat (8) inside is provided with and the suitable awl mouth of taper valve core (6), and said pressure limiting spring (5) compresses taper valve core (6) makes taper valve core (6) withstand the awl mouth.
8. power assistance pump for steering according to claim 7; It is characterized in that: the valve seat (8) in the said flow Safety control valve is taked the double-layer leaching net structure, said double-layer leaching net ectomesoderm filter screen 60 orders, mesh diameter Φ 0.18; Inner filter screen 120 orders; Mesh diameter Φ 0.06,, and double-layer leaching net is the arc structure of protuberance laterally.
9. power assistance pump for steering according to claim 8 is characterized in that: said drainback passage (B) pierces to favour the valve opening direction, and drainback passage (B) mouth shows in valve opening is shaped as ellipse.
10. power assistance pump for steering according to claim 9 is characterized in that: be equipped with O-ring seals between oil distribution casing (15), back oil distribution casing (10) excircle and the pump housing (3) internal chamber wall before said, the flanged surface of the pump housing (3) front end is provided with O-ring seals.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110451942.8A CN102536802B (en) | 2011-12-29 | 2011-12-29 | Power steering pump |
| DE202012104802U DE202012104802U1 (en) | 2011-12-29 | 2012-12-10 | Power steering pump |
| US13/717,180 US20130170959A1 (en) | 2011-12-29 | 2012-12-17 | Power steering pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110451942.8A CN102536802B (en) | 2011-12-29 | 2011-12-29 | Power steering pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102536802A true CN102536802A (en) | 2012-07-04 |
| CN102536802B CN102536802B (en) | 2014-02-12 |
Family
ID=46344553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110451942.8A Active CN102536802B (en) | 2011-12-29 | 2011-12-29 | Power steering pump |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20130170959A1 (en) |
| CN (1) | CN102536802B (en) |
| DE (1) | DE202012104802U1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979727A (en) * | 2012-12-11 | 2013-03-20 | 全兴精工集团有限公司 | Wear-resistant light-duty steering vane pump for heavy-duty truck |
| CN102996437A (en) * | 2012-12-11 | 2013-03-27 | 全兴精工集团有限公司 | Heavy truck motor truck turning oil pump |
| CN103147979A (en) * | 2013-02-28 | 2013-06-12 | 奇瑞汽车股份有限公司 | Power steering pump |
| CN109649485A (en) * | 2019-01-15 | 2019-04-19 | 烟台利通液压技术有限公司 | A kind of Vehicular electric hydraulic power-assisted steering pump assembly |
| CN113565757A (en) * | 2021-07-01 | 2021-10-29 | 燕山大学 | Multi-stage pressure discharge multi-output pump |
| CN114135482A (en) * | 2021-11-29 | 2022-03-04 | 涌镇液压机械（上海）有限公司 | Axis-free cycloid gear pump |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019148544A1 (en) * | 2018-01-31 | 2019-08-08 | 苏州优德通力科技有限公司 | Combined sewage pump with novel standby pump structure |
| CN109237026A (en) * | 2018-11-08 | 2019-01-18 | 周琦人 | Air compressor shaft end reduced pressure sealing structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4443161A (en) * | 1981-05-25 | 1984-04-17 | Jidosha Kiki Co., Ltd. | Balanced dual chamber oil pump |
| CN101285471A (en) * | 2008-01-08 | 2008-10-15 | 郭羽 | Boosting pump for steering car |
| CN201763601U (en) * | 2010-07-21 | 2011-03-16 | 浙江恒隆万安泵业有限公司 | Novel steering pump of truck |
| CN201803621U (en) * | 2010-09-30 | 2011-04-20 | 濮阳市联众兴业化工有限公司 | Heat exchanger |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| UST927009I4 (en) * | 1973-10-23 | 1974-10-01 | Plgi i pq | |
| JPS50142270A (en) * | 1974-05-07 | 1975-11-15 | ||
| US4014630A (en) * | 1974-06-03 | 1977-03-29 | Trw Inc. | Power steering pump |
| US4479764A (en) * | 1983-03-09 | 1984-10-30 | General Motors Corporation | Demand responsive hydraulic pump |
| JPS6088888A (en) * | 1983-10-20 | 1985-05-18 | Mitsubishi Electric Corp | Strainer for rotary compressor |
| US5567125A (en) * | 1995-01-06 | 1996-10-22 | Trw Inc. | Pump assembly with tubular bypass liner with at least one projection |
| US5562758A (en) * | 1995-02-24 | 1996-10-08 | Awaji; Toshio | Method of removing fine particle dust and apparatus therefor |
| JP4471805B2 (en) * | 2004-10-06 | 2010-06-02 | カヤバ工業株式会社 | Vane pump |
| JP2007170321A (en) * | 2005-12-26 | 2007-07-05 | Hitachi Ltd | Variable displacement vane pump |
-
2011
- 2011-12-29 CN CN201110451942.8A patent/CN102536802B/en active Active
-
2012
- 2012-12-10 DE DE202012104802U patent/DE202012104802U1/en not_active Expired - Lifetime
- 2012-12-17 US US13/717,180 patent/US20130170959A1/en not_active Abandoned
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4443161A (en) * | 1981-05-25 | 1984-04-17 | Jidosha Kiki Co., Ltd. | Balanced dual chamber oil pump |
| CN101285471A (en) * | 2008-01-08 | 2008-10-15 | 郭羽 | Boosting pump for steering car |
| CN201763601U (en) * | 2010-07-21 | 2011-03-16 | 浙江恒隆万安泵业有限公司 | Novel steering pump of truck |
| CN201803621U (en) * | 2010-09-30 | 2011-04-20 | 濮阳市联众兴业化工有限公司 | Heat exchanger |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979727A (en) * | 2012-12-11 | 2013-03-20 | 全兴精工集团有限公司 | Wear-resistant light-duty steering vane pump for heavy-duty truck |
| CN102996437A (en) * | 2012-12-11 | 2013-03-27 | 全兴精工集团有限公司 | Heavy truck motor truck turning oil pump |
| CN103147979A (en) * | 2013-02-28 | 2013-06-12 | 奇瑞汽车股份有限公司 | Power steering pump |
| CN103147979B (en) * | 2013-02-28 | 2016-03-16 | 奇瑞汽车股份有限公司 | A kind of power steering pump |
| CN109649485A (en) * | 2019-01-15 | 2019-04-19 | 烟台利通液压技术有限公司 | A kind of Vehicular electric hydraulic power-assisted steering pump assembly |
| CN109649485B (en) * | 2019-01-15 | 2024-04-09 | 烟台利通液压技术有限公司 | Electric hydraulic power-assisted steering pump assembly for vehicle |
| CN113565757A (en) * | 2021-07-01 | 2021-10-29 | 燕山大学 | Multi-stage pressure discharge multi-output pump |
| CN114135482A (en) * | 2021-11-29 | 2022-03-04 | 涌镇液压机械（上海）有限公司 | Axis-free cycloid gear pump |
| CN114135482B (en) * | 2021-11-29 | 2023-11-24 | 涌镇液压机械（上海）有限公司 | Cycloidal gear pump without axle center |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102536802B (en) | 2014-02-12 |
| DE202012104802U1 (en) | 2013-01-23 |
| US20130170959A1 (en) | 2013-07-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102536802B (en) | Power steering pump | |
| CN201723266U (en) | Oil pump for automobile engine | |
| CN104405469A (en) | Engine oil pump and engine lubrication system thereof | |
| CN101351646A (en) | Screw pump | |
| CN202417937U (en) | Power steering pump | |
| CN204785471U (en) | Rotor formula oil pump | |
| CN102840134A (en) | Hydraulic control mechanism for vanes | |
| CN102878077A (en) | Oil distribution disk and cycloid pump using same | |
| CN103649464A (en) | Vacuum pump for use in the automotive sector | |
| JP2015516037A (en) | Rotary piston pump with optimized inlet and outlet | |
| CN104266063A (en) | Elliptic-circular compound cycloid rotor oil pump, rotor thereof and rotor design method | |
| CN102095069B (en) | Oil pump with safety regulation integrated valve | |
| CN101403382B (en) | Gear pump for micro-miniature turbojet engine | |
| CN203783874U (en) | Radial plunger pump | |
| CN202900643U (en) | Pressure feedback type energy-saving steering pump | |
| CN204283690U (en) | Centrifugal supercharging fuel pump | |
| CN206694243U (en) | A kind of CP types single-screw (single screw) pump | |
| CN103912488B (en) | One is heavily blocked dump truck steering pump | |
| CN202900650U (en) | Oil distribution disc and cycloid pump using same | |
| CN203549340U (en) | Variable-displacement pump | |
| CN205895605U (en) | Vacuum pump and rotor thereof | |
| CN110056505B (en) | Pressure-limiting type internal feedback energy-saving hydraulic steering power-assisted pump | |
| CN203770129U (en) | Novel steering oil pump for heavy dump truck | |
| CN104728070A (en) | Power drive system of high pressure water jet pump | |
| CN205714738U (en) | There is the cycloid rotor pump of non-smooth surface |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |